Home / 5,140.36-7,093.70-2,782.49

Finding the Fourth Proportional to 5,140.36, 7,093.70 and 2,782.49

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Solution

The fourth proportional to 5,140.36, 7,093.70 and 2,782.49 is: 3,839.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,140.36 : 7,093.70 = 2,782.49 : x
  2. Step 2: Convert to fraction form
    5,140.36/7,093.70 = 2,782.49/x
  3. Step 3: Cross multiply
    5,140.36x = 7,093.70 × 2,782.49
  4. Step 4: Simplify right side
    5,140.36x = 19,738,149.31
  5. Step 5: Solve for x
    x = 19,738,149.31/5,140.36
  6. Step 6: Final answer
    x = 3,839.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.